Institutional Repository in Medical Sciences
(IRMS – Nicolae Testemițanu SUMPh)

Biochemical composition changes of gram-negative microorganisms under the action of new chemical compounds

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dc.contributor.author Lozan-Tirsu, Carolina
dc.contributor.author Zariciuc, Elena
dc.date.accessioned 2021-06-17T16:02:01Z
dc.date.available 2021-06-17T16:02:01Z
dc.date.issued 2021
dc.identifier.issn 2587-3466
dc.identifier.issn 2587-3458
dc.identifier.uri https://doi.org/10/38045/ohrm.2021.3.09
dc.identifier.uri http://repository.usmf.md/handle/20.500.12710/17881
dc.identifier.uri https://journal.ohrm.bba.md/index.php/journal-ohrm-bba-md/article/view/140/98
dc.description Nicolae Testemitanu State University of Medicine and Pharmacy, Republic of Moldova en_US
dc.description.abstract Introduction. It is known that the enzymes catalase (CT) and superoxide dismutase (SOD) are actively involved in protecting cells of microbial pathogens against the biochemical factors produced by macrophages in vivo, in order to stop infection. Therefore, this study was aimed to quantify the parameters of the antioxidant-enzyme activities within the reference cultures under the action of selected new chemical compounds. Material and methods. Cu (II) coordination compounds, Co (II) and Zn (II) were included as “in vitro” study material, as well as aromatic propenones synthesized at the Department of Inorganic Chemistry, at State University of Moldova. The antimicrobial effects were tested on three gram-negative reference strains. The enzymatic activity of SOD and the CT activity was determined to assess the pathogen-induced changes in the antioxidant status under the action of newly tested compounds. Results. The new chemical compounds showed a significant decrease in the antioxidant enzymatic activities of SOD and CT, induced in all reference strains used, which indicates an intense oxidative stress generated by the tested compounds. Conclusions. The specific activity of new chemical compounds on primary antioxidant enzymes, which represent pathogenicity factors of infectious agents, allows us to assume the benefits of in vivo effect of new native substances, as well as to recommend the selected compounds for further biomedical tests. en_US
dc.description.abstract Introducere. Se știe că enzimele catalaza (CT) și superoxid dismutaza (SOD) se implică activ în protecția microorganismelor patogene contra factorilor biochimici, produși de macrofage in vivo pentru a stopa infecția. Prin urmare, considerăm utilă cuantificarea parametrilor ce reflectă activitatea enzimelor antioxidante în culturile de referință la acțiunea compușilor chimici nou selectați. Material și metode. În calitate de obiecte de studiu in vitro au servit compușii coordinativi ai Cu (II): Co(II), Zn(II), dar și propenonele aromatice sintetizate la Catedra de chimie anorganică a Universității de Stat din Moldova. Efectele antimicrobiene au fost testate pe 3 tulpini de referință Gram-negative. A fost determinată activitatea enzimelor SOD și CT pentru a aprecia modificările statutului antioxidant al culturilor de microorganisme patogene sub influența compușilor nou testați. Rezultate. Compușii chimici noi induc în toate culturile de referință testate o reducere semnificativă a nivelului de activitate a enzimelor antioxidante SOD și CT, ceea ce indică prezența unui stres oxidativ intens, generat de compușii testați. Concluzii. Acțiunea specifică a compușilor chimici noi asupra enzimelor antioxidante primare, care constituie unul dintre factorii de patogenitate a agenților infecțioși, permite presupunerea unui eventual efect benefic in vivo al noilor substanțe autohtone și recomandarea compușilor selectați pentru teste biomedicale. en_US
dc.language.iso en en_US
dc.publisher Asociația de Biosiguranță și Biosecuritate din Republica Moldova en_US
dc.relation.ispartof One Health & Risk Management en_US
dc.subject antimicrobial activity en_US
dc.subject antioxidant-enzyme activity en_US
dc.subject chemical compounds en_US
dc.subject CT en_US
dc.subject SOD en_US
dc.subject.ddc CZU: 579.84:577.15 en_US
dc.title Biochemical composition changes of gram-negative microorganisms under the action of new chemical compounds en_US
dc.title.alternative Modificările conținutului biochimic al microorganismelor gramnegative supuse acțiunii compușilor chimici noi en_US
dc.type Article en_US


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